Mailinglist Archive: opensuse (1470 mails)

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Re: [opensuse] openSUSE on ASUS ZenBook Pro?
On Mon, 15 Feb 2016 18:17:38 +0100
Vojtěch Zeisek wrote:

Just a note for completeness: if You have default Windows
installation and then change UEFI to legacy, the partition won't be
bootable/accessible. But similar will be truth for Linux - GRUB won't
be able to boot after such change.

I had to re-read this a couple of times :-)

Yes, this intuitively makes sense. However, it presumes that can boot
from CD/DVD/USB in UEFI ('secure boot') mode.

The uncooperative system that I referenced earlier wouldn't reveal a
CD/DVD/USB boot option /until/ it was set to boot in legacy mode, and,
once booted in that mode, none of the 'secure boot' mode partitions
were visible or accessible. It was an Acer Aspire E-15 with Windows 8.1
64-bit pre-installed. The only instructions I was able to find said:

"Please enter the BIOS (press and hold F2 key when power on). Switch to
'Boot' and set 'Launch CSM' to 'Enabled.' Then switch to 'Security' and
set 'Secure Boot Control' to 'Disabled.' Press F10 to save and exit.
Press and hold ESC key to launch boot menu when notebook restart."

I never found a way to boot the system from CD/DVD/USB in UEFI ('secure
boot') mode.

Thanks again, Vojtěch!

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